Trolley.



E.- H. GREEN.

TROLLEY. APPLICATION FILED SEPT.13, 1007.

Patented Jan. 12, 1909.

NVENTOH W/ NE SSE S 576% marcN. u. c.

EDWIN H. GREEN, OF EMERYVILLE, CALIFORNIA.

TROLLEY.

Specification of Letters Patent.

Patented Jan. 12, 1909.

Application filed September 13, 1907. Serial No. 392,739.

To all whom it may concern:

Be it known that I, EDWIN H. GREEN, a citizen of the United States, anda resident of Emeryville, in the county of Alameda and tate ofCalifornia, have invented certain new and useful Improvements inTrolleys,

of which the following is a specification.

My invention is an improvement in trolleys and consists in certain novelconstructionsand combinations of parts hereinafter described andclaimed.

Referring to the drawing forming a part hereof-Figure l is a plan viewof my improved trolley. Fig. 2 is a side view of the same. Fig. 3 is anenlarged detail plan view of one end of the trolley. Fig. 4 is a partiallongitudinal section through the roller. Fig. 5 is a side view of amodified form of base showing the pole in one position, and Fig. 6 is asimilar view showing the pole in another position. i i

The present embodiment of my invention comprises the pole and a base 1,adapted to be secured to the top of the car, the base being providedwith a central lug 2, which extends upwardly for a short distance andthen extends horizontally and rearwardly as at 3, the said portion beingrounded to form a rod, and a collar 5 is arranged between the roundedportion and the remainder of the lug. The free end of the rod isthreaded, and is provided with lock nuts 6 thereon. The pole 7 comprisesa base portion 8, having ears 9 arranged on each side of the lug 2, theears and the lug being provided with alined openings, through whichpasses a pin 10, for the purpose of pivotally securing the pole to thelug. The base portion of the pole 8 is provided on each side with lugs11, and a sliding collar 12 is arranged 011 the rod i, the said collarbeing connected by rods 13 with the lugs 11 before described, and aspring 1% is arranged between the sliding collar 12 and the collar 5before mentioned.

The pole proper 15 is connected with the base portion 8, and hasconnected with the free end thereof the body portion of a yoke 17, thearms 18 of the yoke extend alongside of the pole and parallel with eachother for a short distance, thence diverging in opposite directions fromeach other, the extreme ends of the arms being bent and arrangedparallel with each other as at 19. The parallel portions 19 of the armsare connected together by rods 20, which are threaded at each end andtraverse openings in the portion 19 of the arms, nuts 21 being arrangedon each side of each of the arms, whereby the arms may be adjustedtoward and from each other to a limited extent, and retained firmly intheir adjusted position.

A shaft 22 having its ends reduced and squared as at 23, is supported bythe arms, the said arms having a square opening for receiving thesquared portion of the shaft and being provided with a set screw 24: forsecuring the parts together. The ends of the shaft are threaded as at25, and each end is provided with a bearing nut 26, having a ball groove27, and retained in position by a nut 28 also threaded on the shaft. Abush ing 29 provided with ball grooves 30 at its ends is arrangedbetween the nuts, and balls 31 are arranged within the grooves toprovide a ball bearing between the bushing and the nuts. Rings 32 arearranged at each end of the bushing, and secured to the rings is acylindrical shell or tire 33, the shell being Secured to the rings bythe screws 34:.

The extreme ends 18 of the arms of the yoke are given a quarter turn asat 37, and are turned back upon themselves, the free ends thereof beingsecured to the arms as at 38, the said free ends being given a quarterturn before their junction with the main portions of the arms as shownat 38. It will be noticed that bythe two quarter turns the centralportion of the return part of the arm is approximately in a horizontalplane, and to this horizontal portion is secured a guard 39 by rivets 40as shown in Fig. 4, the said guard being curved transversely tocorrespond with the curve of the roller, and also curved longitudinallyforward as shown in Fig. 3 and downward as shown in Fig. 4:.

In the ordinary use of my improvement, two poles are connected with thecar, one at each end thereof, and the advance pole is tied down. If,however, it is desired to use only one pole, the pole may be mountedrotatably in any suitable manner. In Figs. 5 and 6 I have shown arotatable mounting in which the base 41 secured to the car roof, isprovided at opposite sides with cam-shaped lugs or projections 42, andwith a central pin 43, on which is journaled a sleeve 44, to which thepole 15 is pivotally connected as at 45. The sleeve at its lower end isprovided with oppositely arranged notches 46, for engagement by lugs 47on the sides of the pin for locking the sleeve in adjusted position. Thepole 15 is provided on its lower face with a lug 48, for cooperatingwith the lugs 42 whereby to lift the sleeve above the lugs 47 as shownin Fig. 6, after which the pole may be rotated so that it points in theopposite direction. When the pole is released and allowed to springupward, the sleeve moves downward by gravity on the pin, thus engagingthe lugs 47 with the notches 46.

It will be evident from the description, that the rigid mounting of thepole and the length of the roller together with the guards prevent thedisengagement of the trolley from the wire, and also dispenses with thenecessity of overhead switch-pans. The ball bearing shown and describedmay also be dispensed with except for very speedy runs. The uppersurfaces of the guards 39, are flush with the periphery of the roller,so that when the roller is displaced, the guard will be beneath thewire, and as soon as the direction of length of the car is parallel withthe wire, the roller will shift to a position directly beneath the wire,there being no difference in level between the upper surface of theguard and the upper surface of the roller.

By providing the guards with a forward and downwardcurve, either ,crosswires or parallel wires are engaged with equal facility to move themabove the roller. Without such forward curve, cross wires would bestruck with the side of the guard instead of moved smoothly upon theroller. Considerable strain is thus eliminated especially on the roller,the upper faces of the guards being flush with the periphery of theroller.

2. In a trolley, a yoke having arms provided with bearings and whoseextremities are returned to overlie the bearings and are secured attheir ends to the arms in the rear of the bearings, a shaft in thebearings, a bushing on the shaft, rings on the ends of the bushing, andguards supported by the return portions of the arms.

3. In a trolley, a yoke having arms pro vided with bearings and whoseextremities are returned to overlie the bearings and are secured attheir ends to the arms in the rear of the bearings, a roller journaledin the bearings, and guards connected with the return portion of thearms.

EDWIN H. GREEN.

Witnesses:

RAY KIMBALL, JOHN C. COBURN.

